Difference between revisions of "nmap random source IP spoofing script"
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| − | This script was used to generate firewall logs and represent a wide array of incoming traffic. The "-sS" only sends a syn packet, it doesn't try to complete a handshake. Without it, nmap might try to bind to a socket, which will fail because the source IPs it is trying to bind with are faked. | + | This script was used to generate firewall logs and represent a wide array of incoming traffic. It chooses a random source IP to spoof and a random service port. The "-sS" only sends a syn packet, it doesn't try to complete a handshake. Without it, nmap might try to bind to a socket, which will fail because the source IPs it is trying to bind with are faked. |
'''Usage: nmaspoof limit destination'''<br> | '''Usage: nmaspoof limit destination'''<br> | ||
Latest revision as of 01:39, 9 May 2013
This script was used to generate firewall logs and represent a wide array of incoming traffic. It chooses a random source IP to spoof and a random service port. The "-sS" only sends a syn packet, it doesn't try to complete a handshake. Without it, nmap might try to bind to a socket, which will fail because the source IPs it is trying to bind with are faked.
Usage: nmaspoof limit destination
where nmaspoof is the name of the script below
limit is the number of packets / loops of the script you desire
destination is the hostname or IP to target
the script...
#!/bin/bash
LIMIT=$1 DSTIP=$2
for i in `seq $LIMIT` do echo "limit = $LIMIT" RNDPORT=`echo $((RANDOM%=65535))` SOURCEIP=`echo $((RANDOM%=223))"."$((RANDOM%=255))"."$((RANDOM%=255))"."$((RANDOM%=254))` echo "running nmap with spoofed source IP $SOURCEIP" nmap -n --max-retries 1 --host-timeout 1 -e eth1 -sS -S $SOURCEIP $DSTIP -Pn -p $RNDPORT done
